Staff Selection Commission Sub Inspector Exam
Question : The histogen, from which epidermic is formed, is
Option 1: Dermatogen
Option 2: Periblem
Option 3: Plerome
Option 4: Calyptrogen
Correct Answer: Dermatogen
Solution : The correct option is Dermatogen.
The histogen that gives rise to the epidermis is known as the "dermatogen." The term "dermatogen" refers to the main meristem tissue in plant roots that gives birth to the epidermal layer that covers the root's outer surface. This epidermal
Question : In an election between two candidates, 65% of the voters cast their votes, out of which 3% of the votes were decided to be invalid. A candidate got 81,965 votes, which is 65% of the total valid votes. What is the total number of votes enrolled in that election?
Option 1: 2,00,000
Option 2: 1,90,000
Option 3: 2,15,000
Option 4: 1,85,000
Correct Answer: 2,00,000
Solution : Let the total number of voters registered be $x$. 65% of the voters cast their votes. Casted votes = $\frac{65x}{100}$ 3% of cast votes were declared invalid. Valid votes = $\frac{97}{100}×\frac{65x}{100}$ A candidate got 81965 votes which are 65% of the total valid votes. So,
Question : In ecology, _________ is determined by dividing the biomass per unit area by the age of the forest ecosystem.
Option 1: biomass density
Option 2: biomass size
Option 3: biomass energy flow
Option 4: biomass productivity
Correct Answer: biomass productivity
Solution : The correct answer is biomass productivity.
In ecology, biomass productivity is determined by dividing the biomass per unit area by the age of the forest ecosystem. This calculation helps assess the rate at which biomass, or the total mass of living organisms in a
Question : Three boys, on average, are 25 years old, and their ages are in the ratio of 3 : 5 : 7. What is the age of the youngest boy?
Option 1: 24 years
Option 2: 21 years
Option 3: 12 years
Option 4: 15 years
Correct Answer: 15 years
Solution : The average age of the three boys is 25 years, which means the total age of the three boys is 25 × 3 = 75 years Their ages are in the ratio 3 : 5 : 7. The sum of the ratios is 3
Question : Directions: Select the option that is related to the third letter cluster in the same way as the second letter cluster is related to the first letter cluster. PORCH : IDSPQ :: MOIST : ?
Option 1: UTJQO
Option 2: OMITS
Option 3: OPJTU
Option 4: UTJPN
Correct Answer: UTJPN
Solution : Given: PORCH : IDSPQ :: MOIST : ?
Follow the pattern to obtain the required code –
Thus, PORCH is coded as IDSPQ. Similarly, follow the same pattern for MOIST –
Thus, MOIST is coded as UTJPN. Hence, the fourth option is correct.
Question : If $\sqrt{0.04\times 0.4\times a}=0.004\times 0.4\times \sqrt{b},$ then the value of $\frac{a}{b}$ is:
Option 1: $16\times 10^{-3}$
Option 2: $16\times 10^{-4}$
Option 3: $16\times 10^{-5}$
Option 4: $16 \times 10^{-6}$
Correct Answer: $16\times 10^{-5}$
Solution : $\sqrt{0.04\times 0.4\times a}=0.004\times 0.4\times \sqrt{b}$ Squaring both sides, we get, $⇒0.04\times 0.4\times a=0.004^2\times 0.4^2\times {b}$ $⇒\frac{a}{b} = \frac{0.004 \times 0.004 \times 0.4 \times \times0.4}{0.04 \times 0.4}$ $⇒\frac{a}{b} = \frac{16}{10^{5}}$ $\therefore$ $\frac{a}{b} = 16 \times 10^{-5}$ Hence, the correct answer is $16 \times 10^{-5}$.
Question : Directions: In the question, a part of the sentence is in bold. Below are given alternatives to the bold part at (1), (2), and (3) that may improve the sentence. Choose the correct alternative. In case no improvement is needed, your answer is (4).
I visited my aunt just before a week.
(1) a week before
(2) a week earlier
(3) a week ago
(4) No improvement
Option 1: (1)
Option 2: (2)
Option 3: (3)
Option 4: (4)
Correct Answer: (3)
Solution : The correct choice is the third option.
In the original sentence, just before a week is not the correct way to express the time frame. A week ago is the appropriate way to indicate a past time point.
Therefore, the correct sentence is, "I
Question : Which of the following principles is used to produce 'low temperatures'?
Option 1: Superconductivity
Option 2: Joule-Kelvin effect
Option 3: Thermo-electric effect
Option 4: Adiabatic demagnetisation
Correct Answer: Adiabatic demagnetisation
Solution : The correct option is Adiabatic demagnetisation.
To achieve low temperatures, an adiabatic demagnetisation method is helpful. This technique helps to achieve low temperatures of around 1K for the electronic paramagnetic salts. However, the temperature can be as low as possible for the nuclear
Question : Directions: The sequence of folding a piece of paper and the manner in which the folded paper has been cut is shown below. Choose the figure that would most closely resemble the unfolded form of the paper.
Option 1:
Option 2:
Option 3:
Option 4:
Correct Answer:
Solution : When the given folded paper is unfolded, it will look like this –
Hence, the second option is correct.
Question : What is the length of a bacterial cell?
Option 1: 3 to 5 µm
Option 2: 1 to 40 µm
Option 3: 30 to 50 µm
Option 4: 0 to 3 µm
Correct Answer: 3 to 5 µm
Solution : The correct option is 3 to 5 µm.
The average length of bacterial cells falls within the range of 3 to 5 micrometres (µm). This range is a generalisation, and the actual size can vary depending on the bacterial species. Some
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